US5197699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wrist rest
Assignee: Acco Brands USA LLC
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Filing: 1991-04-24
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Granted: 1993-03-30
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Expires: 2011-04-24
Abstract
Abstract A wrist rest (1) of specially designed height and other characteristics is provided for reducing strain on the wrists and hands of a keyboard operator or a similar user of computer accessories. The rest (1) is made to be placed in front of the keyboard or accessory being used, and may be designed to have a particular firmness for comfort. In some embodiments the rest has two foam rubber layers (20,30) about 3/4 inch thick total; the bottom surface has no "skin", to prevent the rest from slipping, while the upper surface has a smooth covering (10) so hands may slide around easily and comfortably. In order to allow rests designed for a normal keyboard to be adapted for use with an especially long keyboard, or with an accessory like a mousepad (4), one embodiment (3) of the invention has contours (101) which can interlock with similar contours (100) on an extension pad (2); these contours are also designed to be easily and inexpensively manufactured.
Inventors
- 👤 Mark R. Smith
- 👤 Philip G. Wessels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:50
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G06F3/039; G06F3/0395; A; A47; A47B; A47B21/00; A47B21/03; A47B21/0371; A47C; A47C16/00; A47B2200/00; A47B2200/0084; A47B2200/009
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
71 words
A wrist rest having a length, depth, and thickness, comprising a) a support layer; b) a low friction surface layer bonded to the support layer; and c) an interlocking contour by means of which it is attachable to an extension pad, wherein the interlocking contour is shaped by three arc segments from circles of the same radius, wherein the thickness of the wrist rest is about from 1/2 to 1 inches.
Claim 2
Dependent Claim
71 words
A wrist rest having a length, depth, and thickness, comprising a) a support layer; b) a low friction surface layer bonded to the support layer; and c) an interlocking contour by means of which it is attachable to an extension pad, wherein the interlocking contour is shaped by three arc segments from circles of the same radius, wherein the thickness of the wrist rest is about from 1/2 to 1 inches.
Claim 3
Dependent Claim
15 words
The wrist rest of claim 1, wherein the support layer is made of foam rubber.
Claim 4
Dependent Claim
12 words
The wrist rest of claim 2, wherein the foam rubber comprises neoprene.
Claim 5
Dependent Claim
13 words
The wrist rest of claim 1, wherein the thickness is about 3/4 inches.
Claim 6
Dependent Claim
84 words
A wrist rest having a length, depth, and thickness, comprising a) a support layer; b) a low friction surface layer bonded to the support layer; and c) a base layer bonded to the support layer and having a first compression deflection pressure, wherein the support layer is made of foam rubber having a second compression deflection pressure, the first deflection compression pressure being higher than the second compression deflection pressure, wherein the thickness of the wrist rest is about from 1/2 to 1 inches.
Claim 7
Dependent Claim
84 words
A wrist rest having a length, depth, and thickness, comprising a) a support layer; b) a low friction surface layer bonded to the support layer; and c) a base layer bonded to the support layer and having a first compression deflection pressure, wherein the support layer is made of foam rubber having a second compression deflection pressure, the first deflection compression pressure being higher than the second compression deflection pressure, wherein the thickness of the wrist rest is about from 1/2 to 1 inches.
Claim 8
Dependent Claim
26 words
The wrist rest as claimed in claim 5, wherein the base layer has a compression deflection pressure of about 5 to 9 pounds per square inch.
Claim 9
Dependent Claim
14 words
The wrist rest as claimed in claim 6, wherein the base layer comprises neoprene.
Claim 10
Dependent Claim
26 words
The wrist rest as claimed in claim 5, wherein the support layer has a compression deflection pressure of about 2 to 5 pounds per square inch.
Claim 11
Dependent Claim
14 words
The wrist rest as claimed in claim 8, wherein the support layer comprises neoprene.
Claim 12
Dependent Claim
15 words
The wrist rest of claim 5, wherein the support layer is made of foam rubber.
Claim 13
Dependent Claim
13 words
The wrist rest of claim 5, wherein the thickness is about 3/4 inches.
References Cited (Backward Citations)
FR2148853A5
Cited
US4481556A
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US4482063A
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US4545554A
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US4621781A
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US4709972A
Cited
US4973176A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-03-29 | 1996-09-28 | 1997-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-29 | 2000-09-28 | 2001-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-29 | 2004-09-28 | 2005-03-30 | $7700.00 | Window Closed / Lapsed |